指示红土型金矿表征的遥感地质特征

红土风化壳中铁、锰质和粘土等矿物的含量高，存在大量的Ｆｅ３＋、Ｆｅ２＋、Ｍｎ２＋、Ｈ２Ｏ、（ＯＨ）１－、ＣＯ２３等离子，而这些离子团的含量决定了红土风化壳的发射波谱性状，应用ＴＭ波段对这些离子团的探测能力，就有可能识别到红土风化壳及与红土型金矿有关的地物目标。湘南地区的ＴＭ数据处理，表明了与已知红土型金矿对应的“ＫＬ特征标志色块”可作为红土型金矿成矿预测的最佳标志。

REMOTE SENSING CHARACTERISTICS INDICATING LATERITE TYPE GOLD DEPOSIT

It is high in contents of iorn, manganese and clay minerals in weathered crust of latterite,and there exist a lot of ions as Fe 3 ,Fe 2 ,Mn 2 ,H 2O,(OH) 1- and CO 2 3 etc..The contents of these ionic masses can confine forms of emission spectrum from weathered crust of latterite.Therefore some characteristic indicators related to weathered crust and laterite type gold deposits could be distinguished by using the detectability of TM band for these ionic masses.The TM data processing in southern Hunan province indicate that the typical KL color block,corresponding to the known laterite type gold deposits can be used as the best indicator for metallogenic prognosis of laterite type gold deposit.